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1. 发明授权

US06594856B1 Pivotal roller mechanism 失效
标题翻译：枢轴机构
公开(公告)号：US06594856B1
公开(公告)日：2003-07-22
申请号：US09683974
申请日：2002-03-07
申请人： Hema Cherukuri
发明人： Hema Cherukuri
IPC分类号： B60B3306
CPC分类号： B60B33/0005 , B60B33/0015 , B60B33/0039 , B60B33/0049 , B60B33/0063 , B60B33/045 , B60B33/063 , Y10T16/193 , Y10T16/1937 , Y10T16/1943 , Y10T16/212
摘要： A fixed pivotal retractable roller mechanism 20 and method for statically supporting an item 46 upon a support surface 44 in an inoperative state and supporting the item 46 to roll along the support surface 44 in an operative state. The mechanism 20 includes a housing 22, a swingarm 26 pivotally engaged with the housing 22, a spring 36, and a roller 32. The swingarm 26 has pivotal movement relative to the housing 22, the swingarm 26 has an inoperative position state where the roller 32 is retracted allowing the housing 22 to rest on and statically contact the support surface 44 and an operative position state where the swingarm 26 is extended such that the housing 22 is not in contact with the support surface 44 allowing the item 46 to roll along the support surface 44. Other embodiments with castor and without a spring are also disclosed.
摘要翻译：固定的可旋转的可回缩辊机构20和用于在不工作状态下将物品46静态地支撑在支撑表面44上并且支撑物品46在操作状态下沿着支撑表面44滚动的方法。机构20包括壳体22，与壳体22枢转地接合的摆臂26，弹簧36和辊32.摆臂26相对于壳体22具有枢转运动，摆臂26具有不工作位置状态，其中辊 32缩回允许壳体22搁置并且静止地接触支撑表面44以及摆臂26被延伸的操作位置状态，使得壳体22不与支撑表面44接触，从而允许物品46沿着还公开了具有脚轮和没有弹簧的其它实施例。

2. 发明授权

US06473935B1 Retractable roller mechanism 失效
标题翻译：伸缩辊机构
公开(公告)号：US06473935B1
公开(公告)日：2002-11-05
申请号：US09681684
申请日：2001-05-21
申请人： Hema Cherukuri
发明人： Hema Cherukuri
IPC分类号： B60B3306
CPC分类号： B60B33/0005 , B60B33/0018 , B60B33/0039 , B60B33/0049 , B60B33/0063 , B60B33/045 , B60B33/063 , Y10T16/1937 , Y10T16/209 , Y10T16/212 , Y10T16/364
摘要： An improved retractable roller mechanism 20 and method for statically supporting an item 42 upon a support surface 40 in an inoperative state and supporting the item 42 to roll along the support surface 40 in an operative state. The retractable roller mechanism 20 includes a housing 22, a roller frame 24 that is slideably engaged with the housing 22, a spring 30, and a roller 28. The roller frame 24 has reciprocative movement relative to the housing 22, such that the frame 24 has an inoperative position state where the frame 24 is retracted allowing the housing 22 to rest on and statically contact the support surface 40 and an operative position state where the frame 24 is extended such that the housing 22 is not in contact with the support surface 40 allowing the item 42 to roll along the support surface 40.
摘要翻译：一种改进的可缩回辊机构20和用于在处于非工作状态的支撑表面40上静态支撑物品42并且支撑物品42在操作状态下沿着支撑表面40滚动的方法。可伸缩辊机构20包括壳体22，与壳体22可滑动地接合的辊框架24，弹簧30和辊28.辊框架24相对于壳体22具有往复运动，使得框架24 具有不工作位置状态，其中框架24缩回，允许壳体22搁置并静止地接触支撑表面40以及框架24延伸的操作位置状态，使得壳体22不与支撑表面40接触允许物品42沿着支撑表面40滚动。

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